In the 6th and 7th centuries Lomello was the occasional residence of the first Lombard kings and its royal status was confirmed in the imperial period when the Lomello counts began to extend their rule to the surrounding areas. The Collegiata di Santa Maria Maggiore complex and the Battistero di San Giovanni ad Fontes, built in the heart of the Lombard kingdom with its ancient baptismal font in hexagonal shape and painting decorations dating to the 7th century, are both of great historic, artistic and architectural interest.